Carrie Arnold

Researchers have used the gene-editing tool CRISPR to manipulate the way that DNA coils up inside the cell — another step in the quest to understand how the genome’s 3-D structure impacts its function.

Only a few genetic changes were enough to change an ordinary stomach bug into the bacteria responsible for the plague.

A new understanding of viral swarms is helping researchers predict how viruses will evolve and where disease is likely to spread.

Newly discovered specimens support a more ancient origin for viruses, perhaps all the way back to the origins of life.

A new theory suggests that cooperation between a host and its microbes may be a significant evolutionary force.